Telling it like it is. It's about to get real, real fast.
Any food scientists/chemists out there with a good idea of the percentage of vinegar made from natural gas?
Heinz advertizes that corn is the main source of ethanol for its vinegar, but the Bureau of Alcohol Tobacco and Firearms states "It is our opinion that most of the distilled spirits used in the production of vinegar are derived from natural gas and petroleum."2 AnswersChemistry3 years ago
I'm hoping that someone can look at this and have an "ah ha" moment and an elegant solution, but I'm making a simple sliding panel/door, the cross section is shown in the picture. What is the greatest height (L in the picture) that the door can have such that it can be removed from the frame?2 AnswersMathematics3 years ago
It seems counterintuitive, but so are DDWFTTW carts. It may be possible, since if speed is increased, so too is the power provided by gravity Fds/dt.
Imagine this device vertically constrained: https://www.youtube.com/watch?v=k-trDF8Yldc
with a very heavy ruler. The cart should shoot down faster than g right? It seems like there must be some constraint, e.g. that the center of mass can't fall faster than freefall, but I'm not certain.6 AnswersPhysics3 years ago
A Special Flood Hazard Area at high risk for flooding has a 1 in 4 chance of flooding during a 30-year mortgage.
What is the probability of flooding for during a general duration, t, say 5 years or 70 years?
Hopefully someone more familiar with probability can help me out.
Thanks.2 AnswersMathematics3 years ago
could you go into device manager/processors/ryzen . . ./properties/driver details and tell me what driver file is being used?
Mine is listing a microsoft driver from 2009, none of the AMD packages seem to install over this driver, which seems a little odd.1 AnswerDesktops3 years ago
I recently acquired a new truck, problem is, most all new trucks have ridiculously short beds, and one of the things I need to do is haul rough and dimensional lumber.
If I have plank, length L, is it more stable to place it in the bed with the tailgate up (with the rear of the plank in the air), or to leave the tailgate down? The bed of the truck is 61" and the tailgate is 21".
With the tailgate down, the board is more prone to sliding out upon acceleration, and snapping in half on large bumps. With the tailgate up, there will be a wind load trying to tilt the board out of the bed. Any suggestions are welcome, although I don't have any space for a trailer.2 AnswersPhysics4 years ago
We ask, "Why is there something?", as if the existence of nothingness were a possibility--when the whole time, "Nothing" is "that which does not exist".20 AnswersPhilosophy5 years ago
This was asked on here and it has me stumped:
Imagine a long chain, linear mass density ρ, that you pick up with constant force F.
How many meters of chain are off the ground in 5 seconds?
I started with:
F - gρL = ρL(dv/dt) where L is the length of suspended chain.
Multiplied by 1/v = dt/dL to get
(F/L - ρg)dL = ρvdv and integrated to
Fln(L/L₀) - ρg(L - L₀) = ρ/2(v^2 - v₀^2)
Problem is, this doesn't integrate easily to find L in terms of t. Moreover, it has some nasty behavior that I hoped integrating would smooth out. For instance, it blows up initially, if there is no initial chain length. This is due to an infinite acceleration at the beginning, since the suspended mass is 0.
Help?1 AnswerPhysics6 years ago
The fruit/nuts seem the most distinctive feature on this one. The second is the relatively smooth gray bark. This is in USDA zone 6/7. I've had no luck in identifying it. Thanks.1 AnswerBotany6 years ago
The fruit/nuts seem the most distinctive feature on this one. The second is the relatively smooth gray bark. This is in USDA zone 6/7. I've had no luck in identifying it. Thanks.2 AnswersGarden & Landscape6 years ago
It's around 20' long.2 AnswersGarden & Landscape6 years ago
I have the indexes of an array in an array. While that may sound confusing, all I want to do is take the array
[ 1 2 .004
2 3 .02
3 4 .7
2 4 .01
4 5 .006]
and create the array
[0 .004 0 0 0
0 0 .02 0 0
0 0 0 .7 0
0 0 0 0 .006]
elegantly in MATLAB without for loops.2 AnswersEngineering8 years ago
Tesla's original exhibit for the 1893 Chicago World's Fair used 2 phase power on 4 coils wound on a toroid in a bucking configuration like so:
The bucking configuration causes the magnetic flux to leave the metal core and fill the airgap, similar to a deflection yoke in a CRT, which in turn causes the egg to spin in a way similar to the rotor in an induction motor.
My question is this: with modern know-how, how would you create such a device (say using 3 phase power), and more to the point, how best to efficiently generate a main field inside the airgap (or better, slightly above it) of a coil and minimize stray field?
All practical (use a the stator from a three-phase motor or 3 pairs of Helmholtz coils with 3 phase power) and crackpot (use Rodin and starship coils) ideas are appreciated.2 AnswersPhysics8 years ago
How much wire does it take to make a grid by wrapping wire around pegs installed along the circumference of a circle (spaced equally along a singe axis)?.
Here's a crude representation of half of the circle and what I'm talking about:
I found the answer in terms of a hideous sum but I'm hoping someone can find a closed form for it.1 AnswerMathematics9 years ago